Pulverizing machine



Patented Apr. 17, 192s.

UNITED STATES V p 1,666,124 PATENT OFFICE.

ERNST H. ELZEMEYER, or sr. LOUIS, MISSOURI, ASSIGNOR'IO AMERICAN rULvEnIzEB.

' COMPANY, or sr. LOUIS, MISSOURI, A CORPORATION or MISSOURI.

PULVERIZING MACHINE.

i Application led October 9, 1925. Serial No. 61,563. y

This invention relates principally to pulverizing machines of .the kind whereln the rotator loosely supports a Aseries of annularly spaced alternately arranged plain and notched rings. In said machines, the plain rings serve to crush the material over which they roll or ride and the notched rings serve as hammers to break the material and as Scrapers or plows .to loosen any material that tends to pack on the grinding surfaces of the machine under the rolling action of the plain rings.

The principal object of the present invention is to produce a ring for pulverizing machines of the above type which will function as a roller to crush the material, as a hammer to break the material and as a scraper or plow to prevent packing of the material. Other objects are simplicity and cheapness of construction and compactness of design.

The invention -consists principally in a ring for pulverizing machines of the kind described-comprising an annular body having an uninterrupted peripheral portion having annularly spaced lugs projecting laterally from the sides thereof. The invention further consists in the parts and in the arrangements and combinations of parts hereinafter described and claimed.

In the accompanying drawing, which forms part of this specification and wherein like symbols refer to like parts wherever they occur,

Fig. 1 is a, vertical transverse section through a pulverizer provided with rings embo yingv my invention;

Fig. 2 is' an enlarged face view-of one of said rings; and

Fig. 3 is an edge view thereof.

In Figure 1 of the accompanying drawing, my invention is, illustratedv in connection with a pulverizer comprising a housing or casing 4 whose-end walls are provided with bearings for rotatably supporting the main shaft 5 of the pulverizer. The end walls of the casing or housing are also provided with arcuate flanges' '6 which form supports for the ends of the grinding concave 7 and grate bars 8. Fixed to themain shaft 6 so as to rotateftherewith, is ak rotator or carrier comprising end disks 9 that are keyed to the shaft 6 and are connected near their` outer edges by a series of annularly spaced parallel rods 10. Mounted on the shaft 6 between the disks 9 are spiders 11, the radially extending armsA 12 of which are perforated receive the supporting rods 10, thus forming supports for said rods intermediate their ends. The hub portions 13 of the spiders vare keyed to the shaft 6 and abut against each other, thereby spacing the arms 12 of the spiders the desired distance from each other.

Loosely arranged on 10 of the rotator or carrier between the radial arms of adjacent spiders are rin s A.

' These rings revolve with the carrier an act as percussion members to break or shatterV the material and they also cooperate with the grindingv surfaces and act as rollers to the supporting rods crush or pulverize the material over which they roll or ride. -Each of the rings comprises an annular body portion 15 having a continuous peripheral surface 16 and a series of annularly spaced lugs 17 whichr project laterally from each side of the rin These lugsterminate flush with the peripie the1r opposing faces 18 `are preferably disposed radially with respect to the axis of the ring. f

By the arrangement described, the peripheral surface 16 of the annular body portlon of each of the rings A serves to crush the material overwhich it rolls or rides, and the laterally projecting lugs 17 which project from the opposite sides of said annular body portion form radial shoulders or hammer faces forA breaking the material and servealso as Scrapers or diggers for loosening any material that tends to pack on the grinding -surfaces of the pulverizer. It is thus apparhave required theuse of two kinds of rings.

I. do not wish to be limited to the preclse construction shown and described.

What I. claim is: 1. A vring for pulverizing machines comprising an annular body whose inner and outer surfaces are substantially concentric, said annular body being provided at one side with laterally extending annularly spaced lugs that are spaced far enough apart to constitute'hammer faces and diggers. 2. A percussion and crushing ring for pulverizing machines comprising an annular body of sufficient weight to serve as a crushing roller, said body being provided with radially disposed lugs that project from the opposite sides thereof and are spaced far ry and enou h apart to constitute hammer faces iggers.

3. A ercussion and crushing ring for pulverizlng machines comprising an annular body provided with annularly spaced lugs that project from the opposite sides of said annular body to form laterally extending crushing surfaces and are spaced far enough apart to form hammer faces at the ends of said surfaces. A

4. A ring for pulverizing machines comprising an annular body provided vvith a series of annularly spaced lugs projecting from each side thereof, the opposing surfaces of adjacent lugs being substantially radial.

5. A percussion and crushing ring for pulverizing machines comprising an annular body provided with radially disposed lugs that project from the opposite sides of said annular body to form laterally extending crushing surfaces and hammer faces at the end of said surfaces, the lugs on the opposite sides of said body being disposed opposite each other.

6. 'A percussion and crushing ring for pulverizing machines comprising an annular body of suficient weight to serve as a crushing roller, the sides of said annular body being offset at intervals to form a pluri. ity of radial hammer faces.

Signed at St. Louis, Missouri, this 5th day of ctober, 1925.

ERNST H. ELZEMEYER. 

